sys/arch/evbmips/malta/pci/pchb.c

   1 /*      $NetBSD: pchb.c,v 1.8 2005/11/25 13:55:14 simonb Exp $  */
   2
   3 /*
   4  * Copyright 2002 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Simon Burge for Wasabi Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Wasabi Systems, Inc.
  21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #include <sys/cdefs.h>
  39 __KERNEL_RCSID(0, "$NetBSD: pchb.c,v 1.8 2005/11/25 13:55:14 simonb Exp $");
  40
  41 #include <sys/param.h>
  42 #include <sys/device.h>
  43 #include <sys/systm.h>
  44
  45 #include <dev/pci/pcivar.h>
  46 #include <dev/pci/pcidevs.h>
  47
  48 static int      pchb_match(struct device *, struct cfdata *, void *);
  49 static void     pchb_attach(struct device *, struct device *, void *);
  50
  51 CFATTACH_DECL(pchb, sizeof(struct device),
  52     pchb_match, pchb_attach, NULL, NULL);
  53
  54 static int pcifound = 0;
  55
  56 static int
  57 pchb_match(struct device *parent, struct cfdata *match, void *aux)
  58 {
  59         struct pci_attach_args *pa = aux;
  60
  61         /*
  62          * Match all known PCI host chipsets.
  63          */
  64         if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
  65             PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_HOST) {
  66                 switch (PCI_VENDOR(pa->pa_id)) {
  67                 case PCI_VENDOR_MARVELL:
  68                         switch (PCI_PRODUCT(pa->pa_id)) {
  69                         case PCI_PRODUCT_MARVELL_GT64120:
  70                                 return (!pcifound);
  71                         }
  72                         break;
  73                 }
  74         }
  75         return (0);
  76 }
  77
  78 static void
  79 pchb_attach(struct device *parent, struct device *self, void *aux)
  80 {
  81         struct pci_attach_args *pa = aux;
  82         char devinfo[256];
  83
  84         printf("\n");
  85         pcifound++;
  86
  87         /*
  88          * All we do is print out a description.  Eventually, we
  89          * might want to add code that does something that's
  90          * possibly chipset-specific.
  91          */
  92         if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_MARVELL &&
  93             PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MARVELL_GT64120) {
  94                 /* Bah, same product ID... */
  95
  96                 /*
  97                  * XXX: Is the >= 0x10 test correct?  The '120 doco
  98                  *      lists rev == 0x02 and the '120A doco lists
  99                  *      rev == 0x10.
 100                  */
 101                 snprintf(devinfo, sizeof(devinfo),
 102                     "Galileo Technology GT-64120%s System Controller",
 103                     PCI_REVISION(pa->pa_class) >= 0x10 ? "A" : "");
 104         } else {
 105                 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo,
 106                     sizeof(devinfo));
 107         }
 108         printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
 109             PCI_REVISION(pa->pa_class));
 110 }